Preparation and characterization of lithium hexafluorophosphate for lithium-ion battery electrolyte

被引：1
|
作者：
刘建文 [1 ]
李新海 [1 ]
王志兴 [1 ]
郭华军 [1 ]
彭文杰 [1 ]
张云河 [1 ]
胡启阳 [1 ]
机构：
[1] School of Metallurgical Science and Engineering,Central South University
来源：
Transactions of Nonferrous Metals Society of China | 2010年 / 20卷 / 02期
关键词：
lithium-ion batteries; lithium hexafluorophosphate; phosphorus pentafluoride; acetonitrile;
D O I：
暂无
中图分类号：
TM912 [蓄电池];
学科分类号：
0808 ;
摘要：
A promising preparation method for lithium hexafluorophosphate(LiPF6)was introduced.Phosphorus pentafluoride(PF5) was first prepared using CaF2 and P2O5 at 280℃for 3 h.LiPF6 was synthesized in acetonitrile solvent by LiF and PF5 at room temperature(20-30℃)for 4 h.The synthesized LiPF6 was characterized by infrared spectrometry and X-ray diffraction(XRD). Atomic absorption and ion chromatography results show that the purity of synthesized LiPF6 reaches 99.98%.Thermal stability of self-synthesized LiPF6 was analyzed by differential thermal analysis and thermogravimetry.The results indicate that the self-synthesized LiPF6 has higher purity,lower impurity contents and better thermal stability than the commercial LiPF6.
引用
收藏
页码：344 / 348
页数：5
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